Answer
$1109J/g$
Work Step by Step
We can find the latent heat of vaporization as follows:
$Q=m\times L$
This can be rearranged as:
$L=\frac{Q}{m}$
We plug in the known values to obtain:
$L=\frac{5100}{4.6}$
$L=1109J/g$
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